39474239977 has 2 divisors, whose sum is σ = 39474239978. Its totient is φ = 39474239976.

The previous prime is 39474239953. The next prime is 39474240037. The reversal of 39474239977 is 77993247493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39418528681 + 55711296 = 198541^2 + 7464^2 .

It is a cyclic number.

It is not a de Polignac number, because 39474239977 - 2¹⁹ = 39473715689 is a prime.

It is not a weakly prime, because it can be changed into another prime (39474239927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19737119988 + 19737119989.

It is an arithmetic number, because the mean of its divisors is an integer number (19737119989).

Almost surely, 2^39474239977 is an apocalyptic number.

It is an amenable number.

39474239977 is a deficient number, since it is larger than the sum of its proper divisors (1).

39474239977 is an equidigital number, since it uses as much as digits as its factorization.

39474239977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72013536, while the sum is 64.

The spelling of 39474239977 in words is "thirty-nine billion, four hundred seventy-four million, two hundred thirty-nine thousand, nine hundred seventy-seven".